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| 数字滤波法在三峡库区香溪河流域基流分割中的应用 | |
| 引用本文： | 崔玉洁,刘德富,宋林旭,肖尚斌,陈玲. 数字滤波法在三峡库区香溪河流域基流分割中的应用[J]. 水文, 2011, 31(6): 18-23 |
| 作者姓名： | 崔玉洁 刘德富 宋林旭 肖尚斌 陈玲 |
| 作者单位： | 1. 三峡大学水利与环境学院,湖北 宜昌,443002 2. 三峡大学水利与环境学院,湖北 宜昌443002;武汉大学水利水电学院,湖北 武汉430072;三峡库区生态环境教育部工程研究中心,湖北 宜昌 443002 3. 三峡大学水利与环境学院,湖北 宜昌443002;武汉大学水利水电学院,湖北 武汉430072; |
| 基金项目： | 国家自然科学基金面上项目，国家自然科学基金杰出青年基金，国家自然科学基金青年基金，国家水体污染控制与治理科技重大专项，"十一五"国家科技支撑，湖北省环保科技项目 |
| 摘 要： | 三峡水库蓄水后,库区来流水质水量变化备受关注。基流分割在降雨-产流模型,水资源配置,点源和非点源污染解析中有重要意义。本文探讨了数字滤波原理,并以三峡库区香溪河流域为研究对象,利用数字滤波法对流域径流总量进行基流分割,分析滤波方程的参数和次数对基流分割结果的影响。结果表明滤波参数β越大,次数越多,分割得到的基流越小。同时将数字滤波法与平滑最小值法基流分割结果进行对比研究,以最小平滑值法为基准,结合香溪河流域特征,数字滤波法中滤波参数β取值0.925时,采用正-反-正三次滤波的基流分割结果最为恰当。 |
| 关 键 词： | 基流分割 香溪河 数字滤波 傅立叶 |
Application of Digital Filtering Theory in Baseflow Separation in Xiangxi River Watershed of Three Gorges Reservoir Area |
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| CUI Yujie,LIU Defu,SONG Linxu,XIAO Shangbin,CHEN Ling. Application of Digital Filtering Theory in Baseflow Separation in Xiangxi River Watershed of Three Gorges Reservoir Area[J]. Hydrology, 2011, 31(6): 18-23 | |
| Authors: | CUI Yujie LIU Defu SONG Linxu XIAO Shangbin CHEN Ling |
| Affiliation: | CUI Yujie1,LIU Defu1,2,3,SONG Linxu1,XIAO Shangbin1,CHEN Ling1(1.College of Hydraulic & Environmental Engineering,China Three Gorges University,Yichang 443002,China,2.School of Water Resources & Hydropower Engineering,Wuhan University,Wuhan 430072,China 3.Engineering Research Center of Eco-environment in TGR Region,Ministry of Education,China) |
| Abstract: | After the impoundment of the Three Gorges Reservoir,the water quality and quantity of the inflow have been focused.Baseflow separation was widely applied in the rainfall-runoff model,water resources allocation,identification of point and non-point source pollutions.In Xiangxi River watershed of Three Gorges Reservoir area,digital filtering theory was employed to separate baseflow from river runoff to examine the effects of parameters and number of filtering equations on results of baseflow separation.The re... |
| Keywords: | baseflow separation Xiangxi River digital filtering Fourie |
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